docs: def delete(gandi, address, force):
      """Delete a domain mail forward."""
      source, domain = address
  
      if not force:
          proceed = click.confirm('Are you sure to delete the domain '
                                  'mail forward %s@%s ?' % (source, domain))
  
          if not proceed:
              return
  
      result = gandi.forward.delete(domain, source)
  
      return result